Let's divide 79947563 by 309
We want to divide 79947563 by 309.

Let's proceed to step 1:
The number 309 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 309

Going ahead to step 2:
If we divide 79 by 309, we get 0 and a remainder of 79.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Fetch the next digit (9) from the dividend, attach it to 79 and continue: 799 / 309

Advancing to step 3:
When dividing 799 by 309, we get 2 with a remainder of 181.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 181 after subtracting 618 from 799.
Grab the next digit (4) from the dividend, add it to 181, then carry on: 1814 / 309

Going ahead to step 4:
If we divide 1814 by 309, we get 5 and a remainder of 269.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we subtract 1545 from 1814, we get 269.
Grab the next digit (7) from the dividend, add it to 269, then carry on: 2697 / 309

Step 5:
If we divide 2697 by 309, we get 8 and a remainder of 225.
Write down 8 as next digit of the result. 
Result so far: 258.0
Subtracting 2472 from 2697 leaves us with 225.
Bring next digit (5) of the dividend behind the 225 and repeat the process: 2255 / 309

Moving on to step 6:
2255 divided by 309 is 7 with a remainder of 92.
The number 7 becomes the next digit in our result. 
Result so far: 2587.0
If we subtract 2163 from 2255, we get 92.
Append the next digit (6) from the dividend to 92 and continue with: 926 / 309

Step 7:
926 divided by 309 is 2 with a remainder of 308.
The next digit of our result is 2. 
Result so far: 25872.0
If we subtract 618 from 926, we get 308.
Bring next digit (3) of the dividend behind the 308 and repeat the process: 3083 / 309

Let's proceed to step 8:
The number 309 fits into 3083 9 times, leaving a remainder of 302.
The next digit of our result is 9. 
Result so far: 258729.0
If we subtract 2781 from 3083, we get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Step 9:
When dividing 3020 by 309, we get 9 with a remainder of 239.
The number 9 becomes the next digit in our result. 
Result so far: 258729.9
Deduct 2781 from 3020 and we're left with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Let's proceed to step 10:
The number 309 fits into 2390 7 times, leaving a remainder of 227.
Use 7 as the next digit of our solution. 
Result so far: 258729.97
If we subtract 2163 from 2390, we get 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Going ahead to step 11:
309 can be fit into 2270 7 times, resulting in a remainder of 107.
The number 7 becomes the next digit in our result. 
Result so far: 258729.977
If we take 2163 away from 2270, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Our division results in 258729.977 with a remaining 0.0107.